JPS5811544B2 - Air mixing device for precision constant temperature air conditioning equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an air-mixing device used in precision constant temperature air conditioning equipment such as semiconductor manufacturing factories, and in particular is used to obtain desired conditioned air by strictly uniformly mixing cold air and warm air. The invention relates to an air-fuel mixture system.

Conventionally, as this type of hot air device, one having the structure shown in FIG. 1 has been proposed.

In FIG. 1, a cold air introduction section 14 and a warm air introduction section 16 are provided by branching the inlet side of the duct 12, and a mixing section 18 configured by arranging a plurality of mixing elements in series is provided within the duct. It is being

The mixing section alternately arranges diffusion-type mixing elements 20 for diffusing airflow and mixing elements 22 for mixing airflow, and performs diffusion and mixing in several stages (two stages in the illustrated example). It is designed to repeat over a period of time.

The resulting mixed air 24 is delivered through the duct 12.

However, there is a problem that the power required for such conventional air-mixing devices is large due to the large resistance loss of the airflow, and furthermore, the space required to install the air-mixing device is large and the equipment becomes large. There were problems and the drawback was that it was difficult to put it into practical use.

The purpose of the present invention is to eliminate such drawbacks of the prior art,
It is an object of the present invention to provide an air mixture device that can obtain good mixed air with a simple structure.

Generally, within a duct, the air flow is close to laminar, and there is little mixing of air.

However, if one side of the air to be mixed blows out the other air at high speed into the duct, giving energy to change the direction of the flow inside the duct, the air flow inside the duct can become turbulent. can.

The present invention has been made with attention to this point, and provides an air-mixing device that can effectively mix cold air and warm air by forcing the airflow in the duct into a turbulent state. It is something.

That is, according to the present invention, in an air-mixing device that mixes cold air and warm air, a main air flow of either cold air or warm air is generated, and the other air flow is blown countercurrently into the main air flow at high speed. An air-mixing device is provided which is characterized in that it performs mixing by.

Hereinafter, a preferred embodiment of the present invention will be described with reference to FIG.

In FIG. 2, a casing 36 is provided in the middle of the ducts 34, 34A through which the main air (warm air) 32 flows.

The casing is divided into a mixing chamber 38, which forms part of a duct 34 for hot air 32, and a blowing air (cold air) chamber 40.

Three bunker nozzles 44 are installed along a partition wall 42 that divides the mixing chamber 38 and the blown air chamber 40.

The outlet of each nozzle faces into the mixing chamber 38, and in the illustrated example, it is inclined in the direction opposite to the flow of the main air (warm air) 32, as shown by the arrow.

The main air 32 is sucked and introduced by a main blower 46 provided on the downstream side of the casing 36 .

On the other hand, the blowing air (cold air) 48 is supplied by a mixing blower 50.
2 into the mixing chamber 38 through the bunker nozzle 44 and into the mixing chamber 38 through the bunker nozzle 44.
It is blown out at a high speed of about 0m/sec.

Inside the mixing chamber 38, warm air 32 is mixed with cold air 48, and the mixed air is sent out in the direction of arrow 54 through duct 34A and main blower 46.

According to the configuration described above, the cold air 48 blown out at high speed from the bunker nozzle 44 is blown out in the opposite direction to the flow direction of the warm air 32 sucked into the mixing chamber 38, so that the flow rate in the mixing chamber 38 is reversed. Directions are scattered in all directions and a turbulent state is created.

In this turbulent flow state, the cold air 48 and the warm air 32 are mixed, and there is no air that remains unmixed and flows out due to a short circuit.

Further, this mixed air is sent to the main blower 46, and the turbulence in the impeller in the blower is used to complete the mixing, and a good mixed air can be sent in the direction of the arrow 54.

According to the embodiment described above, a stable and uniform air-fuel mixture can be obtained with a relatively small space requirement and a simple structure, and at the same time, the power required for mixing can be reduced by utilizing the main air flow. An air mixture device is obtained.

In the above-described embodiment, the bunker nozzle 44 was used to blow out one side of the air (cold air), but instead of the bunker nozzle, a line-shaped blower outlet or the like may be used.

As is clear from the above description, according to the present invention, it is possible to obtain an air-fuel mixture device that has a simple structure and requires less power.

[Brief explanation of drawings]

FIG. 1 is a longitudinal sectional view showing the configuration of a conventional air-mixing device, and FIG. 2 is an explanatory diagram showing the overall arrangement of the air-mixing device according to the present invention. 32...Main air flow, 38...Mixing chamber, 40...Blowout air chamber, 44...,...
Blowing device (banker nozzle), 46... Main blower, 48... Blowing air (cold air), 50...
...Blower for mixing.

Claims (1)

[Claims] 1. In an air-mixing device for precision constant-temperature air conditioning equipment that mixes cold air and warm air, there is a mixing chamber that introduces the main air flow of either cold air or warm air, and a mixing chamber that is provided adjacent to the mixing chamber and that is connected to the main air flow. a blowing air chamber in which a plurality of blowing devices are arranged in series to blow out air from the other side in a countercurrent direction;
A mixture device for precision constant temperature air conditioning equipment, comprising: a mixing blower connected to the blowout air chamber; and a main blower connected to the outlet side of the blowout air chamber.